Space Exploration Technologies Corp. has become the fifth-most-valuable company globally, but a surge in retail investor demand has drawn comparisons to the meme stock era of 2021. Retail investors purchased over $93 million worth of SpaceX shares in the last two trading sessions, accounting for approximately 73% of all retail single-stock purchases during the day, according to data from The Kobeissi Letter. This intense buying activity pushed the stock up nearly 60% to around $213 in midday trading on Tuesday, lifting its market value to nearly $2.75 trillion and placing it ahead of Amazon.com Inc.

Market Reaction and Valuation

The rapid ascent places SpaceX behind only Microsoft Corp., Alphabet Inc., Apple Inc., and Nvidia Corp. The following table details the current market capitalization rankings:

To overtake Nvidia and become the world's biggest company, SpaceX shares would need to rally about 81% to close the gap to Nvidia's $5.07 trillion valuation, assuming Nvidia's stock remains flat.

Analyst Warnings and Valuation Concerns

Charlie Bilello, an executive at Creative Planning, cautioned against the rally, noting similarities to the market behavior in 2021. "Last time I saw this was in 2021 when I was warning about the meme stock/SPAC/ARKK manias," Bilello said. "History doesn't repeat itself, but it often rhymes."

Keith Snyder at CFRA initiated coverage with a Sell rating and a $115 price target, implying roughly 46% downside from current levels. Snyder highlighted that while SpaceX has built a formidable business around Starlink, investors are paying for future potential rather than current fundamentals. He described SpaceX’s overall $28.5 trillion total addressable market estimate as "a complete fantasy," noting the figure is roughly equivalent to the entire annual economic output of the United States.

Financials and Governance Risks

SpaceX’s Connectivity segment generated $11.4 billion in revenue in 2025, compared with $4.1 billion from the Space segment and $3.2 billion from AI operations. Connectivity operating income climbed to $4.4 billion in 2025 from just $469 million in 2023. However, despite generating $6.8 billion in operating cash flow during 2025, SpaceX spent $20.7 billion on capital expenditures, resulting in approximately $14 billion of negative free cash flow before portfolio adjustments. Through supervoting Class B shares, Elon Musk holds about 85% of the voting power while owning roughly half of the economic interests, leaving public shareholders little real say.

Space Exploration Technologies Corp. has completed its initial public offering, shifting focus to the company's strategic objectives including Mars colonization. Prediction markets, however, indicate low confidence in the feasibility of these near-term deep space ambitions.

Data from Kalshi, a federally authorized betting platform, shows that over $101,000 has been wagered on the contract "Will Elon Musk visit Mars in his lifetime?" Bettors on the platform currently assign a 13% probability to the event occurring.

Mars Settlement Targets

SpaceX's IPO paperwork outlined performance targets for Musk. If he helps the company establish a permanent human settlement on Mars with at least one million residents, and the company achieves a $7.5 trillion valuation, he will receive 200 million super-voting restricted shares.

Musk has acknowledged the timeline for these goals is extensive. In February, he stated that SpaceX's Mars timeline was slipping by "five to seven years" to allow the company to prioritize lunar missions.

Starlink IPO Outlook

Following the main SpaceX IPO, prediction markets have turned attention to a potential Starlink public offering. Bettors have assigned a very low probability to Starlink announcing an IPO before June 2027.